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  • 1
    Electronic Resource
    Electronic Resource
    Manure and peat based iron-organo complexes (1991)
    Springer
    Plant and soil 130 (1991), S. 35-43 
    Details
    ISSN: 1573-5036
    Keywords: enrichment ; farmyard manure ; iron ; manganese ; peat ; poultry manure ; zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Earlier studies have shown that some naturally occuring organic materials can be used as an Fe source for plants. The aim of this research was to study enrichment procedures that would result in complex formation in common, low cost organic materials and to determine the maximum attainable Fe enrichment levels. Three organic materials-farmyard manure (FYM), poultry manure (PM) and Huleh Valley peat (PE) were studied for their characteristics as Fe, Mn and Zn carriers for plant uptake. Various enrichment procedures were investigated. These studies have shown that the enrichment level depends on the metal, pH and the water soluble fraction (WSF) of the organic materials. Maximum enrichment levels (at pH=3.5) were measured after the excess of inorganic salts was removed by leaching. These levels were 5.8–6.6% for Fe, 3.0–3.4% for Mn and 6.0–6.3% for Zn. An infrared spectrum of the Fe enriched WSF showed that most of the ligands in the complex formed are polysaccharides or polysaccharide-like compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011853
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Manure and peat based iron-organo complexes (1991)
    Springer
    Plant and soil 130 (1991), S. 45-50 
    Details
    ISSN: 1573-5036
    Keywords: enrichment ; farmyard manure ; iron ; peat ; poultry manure ; transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Iron transport in soils amended with Fe-enriched farmyard manure (FYM), poultry manure (PM) and Huleh Valley peat (Peat) was studied in saturated soil columns under constant water flow rate. The Fe concentration in the effluent varied with the type of the organic material, water soluble fraction (WSF) concentrations and the susceptibility of the WSF to chemical and microbial degradation. Incubation of soils treated with the enriched organic materials significantly enhanced the levels of leachable Fe complexes in the case of the FYM and PM treatments which were easily subjected to biodegradation, whereas incubation of a soil with Fe-enriched peat resulted in minor effects. Under a simulated drip irrigation regime (5 irrigation cycles during 104 days), DTPA extractable Fe concentration increased to a depth of 45 cm and to a horizontal distance of 30 cm from a point source of Fe enriched organic matter. The Fe movement in the soil was attributed to mass-flow of water-soluble complexes which are partially present in the original organic material and partially formed by degradation processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011854
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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